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CWAO of butyric acid solutions: catalyst deactivation analysis

2004Journal article Restricted access
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dc.contributor.authorGomes, Helder
dc.contributor.authorÓrfão, José
dc.contributor.authorFigueiredo, José
dc.contributor.authorFaria, Joaquim
dc.date.accessioned2010-01-20T16:21:18Z
dc.date.available2010-01-20T16:21:18Z
dc.date.issued2004
dc.description.abstractCarbon-supported platinum and iridium catalysts were prepared for catalytic wet air oxidation (CWAO) applications. These catalysts were tested in the CWAO of butyric acid aqueous solutions at 200 °C and 6.9 bar of oxygen partial pressure, and significant conversions above 70% were obtained depending on the catalyst used. The long-term deactivation resistance of the Pt/C catalyst is higher than that of the Ir/C catalyst. The deactivation observed with the Ir/C catalyst was attributed to the overoxidation of the surface of iridium by molecular oxygen. A deactivation study of the catalysts was conducted using N2 adsorption, thermogravimetric analysis, temperature-programmed reduction, and X-ray photoelectron spectroscopy. A kinetic model describing the observed deactivation phenomena in the Ir/C catalyst is proposed and tested using the experimental data obtained in the CWAO of the systems studied.pt
dc.identifier.citationGomes, Helder; Órfão, José; Figueiredo, José; Faria, Joaquim (2004). CWAO of butyric acid solutions: catalyst deactivation analysis. Industrial and Engineering Chemistry Research. ISSN 0888-5885. 43:5, p.1216-1221pt
dc.identifier.urihttp://hdl.handle.net/10198/1349
dc.language.isoengpt
dc.publisherAmerican Chemical Societypt
dc.titleCWAO of butyric acid solutions: catalyst deactivation analysispt
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1221pt
oaire.citation.startPage1216pt
oaire.citation.titleIndustrial and Engineering Chemistry Researchpt
person.familyNameGomes
person.givenNameHelder
person.identifier.ciencia-id6218-1E19-13EE
person.identifier.orcid0000-0001-6898-2408
rcaap.rightsrestrictedAccesspt
rcaap.typearticlept
relation.isAuthorOfPublication0eb96337-224a-4339-9918-334436fbbb99
relation.isAuthorOfPublication.latestForDiscovery0eb96337-224a-4339-9918-334436fbbb99

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